Abstract
Co-Located wet-only and bulk precipitation collectors have been used to measure precipitation amount and ionic composition at nine rural sites in the United Kingdom. The wet-only collector collects less rain, particularly at more exposed, windier sites. This is believed to arise primarily from aerodynamic blockage rather than from late opening of the collector at the onset of rain. In general, agreement between the two types of collector for ionic composition is good. However, at two sites which experience low rainfall and elevated concentrations of primary and secondary pollutants in easterly airflow, the bulk collector yields larger concentrations of non-marine sulphate. Measurements of particulate sulphate suggest that dry deposition of particles is sufficient to explain the observed differences. In contrast, larger ammonium concentrations are measured with the wet-only collector. The observations are consistent with loss of ammonium from the bulk collector, particularly at sites of low annual mean acidity. These differences are greater in summer than in winter suggesting a biological loss mechanism.
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Adams, S. J., Bradley, S. G., Stow, C. D., and Mora, S. J.: 1986, Nature 321, 842.
Campbell, G. W., Cocksedge, J. L., Coster, S. M., Dennis, A. L., Devenish, M., Heyes, C. J., Perrin, D. A., Stone, B. H., and Irwin, J. G.: 1988, Acid Rain in the United Kingdom: Spatial Distributions and Seasonal Variations in 1986, Stevenage: Warren Spring Laboratory, LR 691 (AP)M.
Dasch, J. M.: 1985, Environ. Sci. Technol. 19, 721.
Devenish, M.: 1986, The United Kingdom Precipitation Monitoring Networks, Stevenage: Warren Spring Laboratory, LIZ 584 (AP).
Eggleston, H. S. and McInnes, G.: 1987, Methods for the Compilation of UK Air Pollutant Emission Inventories, Stevenage: Warren Spring Laboratory, LIZ 634 (AP).
EMEP: 1977, Manual for Sampling and Chemical Analysis, Lillestrom: Norwegian Institute for Air Research, EMEP/CHEM-3/77.
Fowler, D. and Cape, J. N.: 1984, Atmos. Environ. 18, 183.
Galloway, J. N. and Likens, G. E.: 1978, Tellus 30, 71.
Hall, D. J.: 1986, The Precipitation Collector for Use in the Secondary National Acid Deposition Network, Stevenage: Warren Spring Laboratory, LR 56I (AP).
Lambert, D. R.: 1989, ‘Local Variations in the Chemistry of Precipitation in the Vicinity of Leeds’, PhD thesis, Department of Fuel and Energy, Houldsworth School of Applied Science, The University of Leeds.
Madsen, B. C.: 1982, Atmos. Environ. 16, 2515.
Metcalfe, S. E., Atkins, D. H. F., and Derwent, R. G.: 1988 Acid Deposition Modelling and the Interpretation of the UK Secondary Precipitation Network Data, Harwell: AERE Report R-13287.
Mosello, R., Marchetto, A., and Tartari, G. A.: 1988, Water, Air, and Soil Pollut. 42, 137.
Ridder, T. D., Buishand, T. A., Reijnders, H. F. R., 't Hart, M. J. and Slanina, J.: 1985, Atmos. Environ. 19, 759.
Rodda, J. C. and Smith, S. W.: 1986, Atmos. Environ. 20, 1059.
Sisterson, D. L., Wurfel, B. E. and Lesht, B. M.: 1985, Atmos. Environ. 19, 1453.
Slanina, J., Mols, J. J., Baard, J. H., van der Sloot, A. H., van Raaphorst, H. A. and Asman, W.: 1979, Intern. J. Environ. Anal. Chem. 7, 161.
Soderlund, R.: 1982, On the Difference in Chemical Composition of Precipitation Collected in Bulk and Wet-Only Collectors, Stockholm: University of Stockholm, Department of Meteorology, CM-57.
Stone, B. H.: 1990, An Assessment of the Collection Efficiency of the United Kingdom Precipitation Collectors, Stevenage: Warren Spring Laboratory. LIZ 800 (AP)
Tang, A. J. S., Chan, W. H., Orr, D. B., Bardswick, W. S., and Lusis, M. A.: 1987, Water, Air, and Soil Pollut. 36, 91.
Vet, R. J.: 1988, ‘The Precision and Comparability of Precipitation Chemistry Measurements in the Canadian Air and Precipitation Monitoring Network (CAPMoN)’, in K. Nodop and W. Leyendecker (eds.), Expert Meeting on Sampling, Chemical Analysis and Quality Assurance, Arona, Italy. Liliestrom: Norwegian Institute for Air Research, EMEP-CCC 4/88, pp. 171–192.
Webster, R. W., Campbell, G. W. and Irwin, J. G.: 1990, Environ. Monit. and Assess (in press).
Winkler, P., Jobst, S., and Harder, C.: 1988, ‘Intercomparison of Precipitation Sensors and Wet-only Collectors’, in K. Nodop and W. Leyendecker (eds.), Expert meeting on Sampling, Chemical Analysis and Quality Assurance, Arona, Italy, Lillestrom: Norwegian Institute for Air Research, EMEP-CCC 4/88, pp. 83–89.
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Stedman, J.R., Heyes, C.J. & Irwin, J.G. A comparison of bulk and wet-only precipitation collectors at rural sites in the United Kingdom. Water Air Soil Pollut 52, 377–395 (1990). https://doi.org/10.1007/BF00229445
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DOI: https://doi.org/10.1007/BF00229445